In what directional situation in Australia would one have found the main base of operation for the Aero-Tropics Air Services?
north-east
-1
Section::::Abstract.
Aero-Tropics Air Services
1481247
-1
Section::::Abstract.
Aero-Tropics Air Services
1481247
-1
Section::::Abstract.
Queensland
59051
-1
Section::::Abstract.
Queensland
59051